Writing instrument cap



FIG. 1 is a front elevational view of a writing instrument cap according to the present invention;

FIG. 2 is a right side elevational view of the writing instrument cap of FIG. 1, the left side view being a mirror image of the right side view;

FIG. 3 is a rear elevational view of the writing instrument cap of FIG. 1;

FIG. 4 is a top plan view of the writing instrument cap of FIG. 1;

FIG. 5 is a bottom plan view of the writing instrument cap of FIG. 1;

FIG. 6 is a second front elevational view of the writing instrument cap of FIG. 1; and,

FIG. 7 is a front perspective view of the writing instrument cap of FIG. 1.

The writing instrument portion depicted by means of broken lines in FIGS. 1 through 3 and 6 and 7 has been shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a writing instrument cap, as shown and described. 